About this Abstract |
Meeting |
MS&T24: Materials Science & Technology
|
Symposium
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Additive Manufacturing Modeling, Simulation, and Machine Learning: Microstructure, Mechanics, and Process
|
Presentation Title |
Micromechanical Modeling Exploration of Microstructure-Properties of Additively Manufactured Pure Tantalum |
Author(s) |
Li Ma, Gianna Valentino |
On-Site Speaker (Planned) |
Li Ma |
Abstract Scope |
Additive manufacturing (AM) has transformed the processing and shaping of refractory metals, enabling the creation of net-shape complex form factors. This study computationally investigates the process-structure-property relationships of AM pure tantalum using experimental data. Pure Ta components were fabricated via laser-powder bed fusion, varying laser parameters such as power, speed, and hatch. The grain size and crystallographic texture were characterized experimentally using electron backscatter diffraction, and these data were utilized to generate representative volume element meshes using Dream3D. The mechanical properties of AM Ta were studied using the crystal plasticity finite element (CPFE) method, which revealed insights into the mechanical response under different laser parameters. The CPFE predictions were then compared to experimental measurements, showing excellent agreement. This research marks a significant step towards establishing a computational framework for body-centered cubic refractory alloys, which exhibit significant changes in mechanical response due to grain refinement. |